package cang.string.Day02;

public class Demo09 {
    public static void main(String[] args) {
        String str = "aaaa2ikj54sdi4kj56hb8fd4kj3di7ks8hp89hl1kn1ds";
        String s= str.replace("\\d","!");
        System.out.println(s);
    }
}
